Composite powder material for mosquito induction and use method

Abstract

The invention provides a composite powder material for mosquito induction and a use method, and belongs to the field of powder materials. The composite powder material comprises a first component and a second component, the first component comprises the following raw materials in parts by weight: 100 parts of carbonate or bicarbonate; 10 to 30 parts of calcium chloride; 1 to 10 parts of super absorbent resin powder; 1-5 parts of quick lime; the raw material of the second component comprises solid acid; wherein the molar ratio of hydrogen ions in the solid acid to carbonate radicals of the carbonate is (2-2.3): 1; the molar ratio of hydrogen ions in the solid acid to bicarbonate radicals in the bicarbonate is (1-1.2): 1. When in use, after the first component and the second component which are independently sealed and stored are mixed, a proper amount of water is sprayed on the surface of the mixture, or the mixture is placed in an environment with the humidity larger than or equal to 50 RH% for standing for 1-10 min. According to the invention, stable and continuous carbon dioxide release can be realized, and the mosquito luring effect is ensured.

Description

Technical Field

[0001] The invention relates to the field of powder materials, and in particular to a composite powder material for mosquito induction and a use method thereof. Background Art

[0002] CO2 as a mosquito trapping material is environmentally friendly, highly efficient and safe, and has become one of the hot topics of recent research.

[0003] For example, a Chinese invention application (name: "Carbon Dioxide Mosquito Attraction and Killing Device", publication number: CN117337814A, publication date: 20240105) discloses a carbon dioxide mosquito attraction and killing device, which includes a housing, a carbon dioxide enrichment and release unit, a carbon dioxide releaser, and a power grid device; the carbon dioxide enrichment and release unit is fixed on the housing, which has a carbon dioxide capture box, and a carbon dioxide capture material and a carbon dioxide release element are arranged in the carbon dioxide capture box; the carbon dioxide gas outlet on the carbon dioxide enrichment and release unit is connected to the carbon dioxide gas inlet on the carbon dioxide releaser through a gas transmission pipeline system. During implementation, the carbon dioxide releaser releases carbon dioxide gas to attract mosquitoes to fly to the area where the power grid device is located, and they are killed by the power grid. The power grid device also has the advantages of stable voltage and silent killing.

[0004] The carbon dioxide mosquito attracting and killing device uses a carbon dioxide capture material to capture carbon dioxide in the air and then releases it. However, the amount of carbon dioxide captured is greatly affected by the carbon dioxide capture material itself, and the mosquito attracting effect is not very stable. Summary of the invention

[0005] The present invention aims to provide a composite powder material for mosquito induction and a method of use, which can achieve stable and continuous carbon dioxide release, thereby ensuring the mosquito attracting effect.

[0006] The technical solution adopted by the present invention is: A composite powder material for mosquito induction, comprising a first component and a second component; In parts by weight, the raw materials of the first component include: carbonate or bicarbonate, 100 parts; Calcium chloride, 10-30 parts; Super absorbent resin powder, 1-10 parts; Quicklime, 1-5 parts; The raw materials of the second component include solid acid; Wherein, the molar ratio of hydrogen ions in the solid acid to carbonate ions in the carbonate is 2-2.3:1; The molar ratio of hydrogen ions in the solid acid to bicarbonate in the bicarbonate is 1-1.2:1.

[0007] The hydrogen ion in the solid acid in this application refers to the hydrogen ion H released after the solid acid is dissolved in water. + .

[0008] Furthermore, the carbonate is one or more of calcium carbonate, sodium carbonate, magnesium carbonate, potassium carbonate, and ammonium carbonate; The bicarbonate is one or more of calcium bicarbonate, sodium bicarbonate, magnesium bicarbonate, potassium bicarbonate, and ammonium bicarbonate.

[0009] Furthermore, the carbonate is calcium carbonate with a microporous structure. Calcium carbonate with a microporous structure can not only provide carbon dioxide as a reaction raw material, but also its own microporous structure can capture a certain amount of carbon dioxide, which has a certain regulatory effect on the release process of carbon dioxide.

[0010] Furthermore, when the carbonate is calcium carbonate, it includes calcium carbonate with a D50 particle size of 200-300 μm, calcium carbonate with a D50 particle size of 40-70 μm, and calcium carbonate with a D50 particle size of 10-30 μm. The calcium carbonate is graded by calcium carbonates of different D50 particle sizes. After being piled up, the calcium carbonates are overlapped to form bridges, which can form a passage for air circulation, which is conducive to the reaction between calcium carbonate and solid acid to produce carbon dioxide.

[0011] Furthermore, when the carbonate is calcium carbonate, the weight ratio of calcium carbonate with a D50 particle size of 200-300 μm, calcium carbonate with a D50 particle size of 40-70 μm, and calcium carbonate with a D50 particle size of 10-30 μm is 0.1-0.3:0.5-0.7:1.

[0012] Furthermore, the highly water-absorbent resin powder is one or more of polyacrylic acid salt, polyacrylamide, starch-acrylate polymer, starch-acrylonitrile graft copolymer, and acrylamide-acrylonitrile-acrylic acid terpolymer.

[0013] Furthermore, the raw materials of the first component also include: 0.1-0.5 parts of water-soluble polymer.

[0014] Furthermore, the water-soluble polymer is one or more of polyvinyl alcohol and polyethylene oxide. When a small amount of water-soluble polymer is introduced into the composite powder material, it is dissolved in the local liquefied environment formed by the air absorbed by the calcium chloride and the super absorbent resin powder, and the contact reaction process between the solid acid and the carbonate or bicarbonate is adjusted, which is suitable for a high humidity environment (humidity greater than or equal to 50RH%) to maintain the release of carbon dioxide in a roughly balanced state.

[0015] Furthermore, the solid acid is one or more of lactic acid, citric acid, malic acid, aminosulfonic acid, and boric acid.

[0016] A method for using a composite powder material for mosquito induction comprises mixing a first component and a second component which are independently sealed and stored before use, and then spraying a proper amount of water on the surface of the mixture, or placing the mixture in an environment with a humidity greater than or equal to 50 RH% and standing for 1 to 10 minutes.

[0017] The beneficial effects of the present invention are: 1. The present invention provides a composite powder material for mosquito induction, which adopts a two-component design, wherein the first component is composed of carbonate or bicarbonate, as well as calcium chloride, super absorbent resin powder, quicklime, etc., and the second component is composed of solid acid, etc. The first component and the second component are sealed and stored separately to prevent the risk of mixing the two in advance and inducing carbon dioxide accumulation. In the present invention, the composite powder material forms a local liquefaction environment by absorbing water in the air, the hygroscopic properties of the solid acid itself, and the water generated by the reaction of carbonate or bicarbonate with the solid acid through super absorbent resin powder and calcium chloride, providing the necessary conditions for the continuous contact reaction between carbonate or bicarbonate and solid acid to produce carbon dioxide; on the other hand, the super absorbent resin powder in the composite powder material absorbs moisture from the air and expands, which can gradually destroy the "hard shell layer" formed by the reaction of carbonate or bicarbonate with solid acid, exposing unreacted carbonate or bicarbonate and solid acid, which is conducive to the long-term continuous reaction, and the super absorbent resin The powder can also adjust the amount of water in the formed local liquefied environment to prevent the local liquefied environment from accelerating and expanding, sharply accelerating the reaction process of carbonate or bicarbonate with solid acid, and shortening the service life of the composite powder material; furthermore, the highly absorbent resin powder in the composite powder material after absorbing water and swelling has a certain capture effect on carbon dioxide, and can have a certain regulating effect on the release process of carbon dioxide; furthermore, the composite powder material contains calcium oxide, and its hydration heat can promote the release of carbon dioxide; finally, the composite powder material in the present invention can achieve stable and continuous carbon dioxide release, and the mosquito attracting effect is guaranteed.

[0018] 2. The present invention also provides a method for using a composite powder material for mosquito induction. Since the first component and the second component are both solid materials, the process of reacting to generate carbon dioxide starts relatively slowly. Therefore, spraying an appropriate amount of water on the surface of the mixture, or placing the mixture in an environment with a humidity greater than or equal to 50RH% and standing for 1 to 10 minutes, calcium chloride, super absorbent resin powder, etc. can quickly absorb water to form a local liquefied environment. After the solid acid is dissolved in the local liquefied environment, it can generate carbon dioxide with carbonate or bicarbonate, shortening the waiting time. DETAILED DESCRIPTION

[0019] A composite powder material for mosquito induction, comprising a first component and a second component; In parts by weight, the raw materials of the first component include: carbonate or bicarbonate, 100 parts; Calcium chloride, 10-30 parts; Super absorbent resin powder, 1-10 parts; Quicklime, 1-5 parts; The raw materials of the second component include solid acid; Wherein, the molar ratio of hydrogen ions in the solid acid to carbonate ions in the carbonate is 2-2.3:1; The molar ratio of hydrogen ions in the solid acid to bicarbonate in the bicarbonate is 1-1.2:1.

[0020] Wherein, the carbonate is one or more of calcium carbonate, sodium carbonate, magnesium carbonate, potassium carbonate, and ammonium carbonate; the bicarbonate is one or more of calcium bicarbonate, sodium bicarbonate, magnesium bicarbonate, potassium bicarbonate, and ammonium bicarbonate. Further, the carbonate is calcium carbonate with a microporous structure, and the microporous calcium carbonate has a larger area that can contact and react with hydrogen ions. Further, when the carbonate is calcium carbonate, it includes calcium carbonate with a D50 particle size of 200-300 μm, calcium carbonate with a D50 particle size of 40-70 μm, and calcium carbonate with a D50 particle size of 10-30 μm. Calcium carbonate is composed of calcium carbonate gradings of different D50 particle sizes. After stacking, the calcium carbonates are overlapped to form bridges, which can form passages for air circulation and channels for liquid migration, which is conducive to the reaction between calcium carbonate and solid acid to produce carbon dioxide. Furthermore, when the carbonate is calcium carbonate, the weight ratio of calcium carbonate with a D50 particle size of 200-300 μm, calcium carbonate with a D50 particle size of 40-70 μm, and calcium carbonate with a D50 particle size of 10-30 μm is 0.1-0.3:0.5-0.7:1.

[0021] The super absorbent resin powder is one or more of polyacrylic acid salt, polyacrylamide, starch-acrylate polymer, starch-acrylonitrile graft copolymer, acrylamide-acrylonitrile-acrylic acid terpolymer. The solid acid is one or more of lactic acid, citric acid, malic acid, aminosulfonic acid, and boric acid.

[0022] The raw materials of the first component also include: 0.1-0.5 parts of water-soluble polymer. Further, the water-soluble polymer is one or more of polyvinyl alcohol and polyethylene oxide.

[0023] The following is a more specific example.

[0024] Example 1

[0025] A composite powder material for mosquito induction, comprising: The first component: sodium carbonate 100g, calcium chloride 10g, sodium polyacrylate 1g, quicklime 1g; Second component: citric acid 126.88g.

[0026] Example 2

[0027] A composite powder material for mosquito induction, comprising: The first component: 100g sodium carbonate, 30g calcium chloride, 10g sodium polyacrylate, 5g quicklime; Second component: citric acid 126.88g.

[0028] Example 3

[0029] A composite powder material for mosquito induction, comprising: The first component: 100g sodium carbonate, 22g calcium chloride, 4g sodium polyacrylate, 4g quicklime; Second component: citric acid 126.88g.

[0030] Example 4

[0031] A composite powder material for mosquito induction, comprising: The first component: 100g sodium bicarbonate, 22g calcium chloride, 4g sodium polyacrylate, 4g quicklime; Second component: 80.04g citric acid.

[0032] Example 5

[0033] A composite powder material for mosquito induction, comprising: The first component: 100g sodium carbonate, 22g calcium chloride, 4g sodium polyacrylate, 4g quicklime; The second component: 96.16g of aminosulfonic acid.

[0034] Example 6

[0035] A composite powder material for mosquito induction, comprising: The first component: 100g calcium carbonate (D50 particle size 40~70μm, solid), 22g calcium chloride, 4g sodium polyacrylate, 4g quicklime; Second component: citric acid 127.96g.

[0036] Example 7

[0037] A composite powder material for mosquito induction, comprising: The first component: 100g calcium carbonate (D50 particle size 40~70μm, microporous), 22g calcium chloride, 4g sodium polyacrylate, 4g quicklime; Second component: citric acid 127.96g.

[0038] Example 8

[0039] A composite powder material for mosquito induction, comprising: The first component: 100g calcium carbonate (calcium carbonate with a D50 particle size of 200-300μm, calcium carbonate with a D50 particle size of 40-70μm and calcium carbonate with a D50 particle size of 10-30μm in a weight ratio of 0.1:0.5:1, microporous), 22g calcium chloride, 4g sodium polyacrylate, 4g quicklime; Second component: citric acid 127.96g.

[0040] Example 9

[0041] A composite powder material for mosquito induction, comprising: The first component: 100g calcium carbonate (calcium carbonate with a D50 particle size of 200-300μm, calcium carbonate with a D50 particle size of 40-70μm and calcium carbonate with a D50 particle size of 10-30μm in a weight ratio of 0.3:0.7:1, microporous), 22g calcium chloride, 4g sodium polyacrylate, 4g quicklime; Second component: citric acid 127.96g.

[0042] Example 10

[0043] A composite powder material for mosquito induction, comprising: The first component: 100g calcium carbonate (calcium carbonate with a D50 particle size of 200-300μm, calcium carbonate with a D50 particle size of 40-70μm and calcium carbonate with a D50 particle size of 10-30μm in a weight ratio of 0.2:0.6:1, microporous), 22g calcium chloride, 4g sodium polyacrylate, 4g quicklime; Second component: citric acid 127.96g.

[0044] Embodiment 11

[0045] A composite powder material for mosquito induction, comprising: The first component: calcium carbonate 100g (calcium carbonate with a D50 particle size of 200-300μm, calcium carbonate with a D50 particle size of 40-70μm and calcium carbonate with a D50 particle size of 10-30μm, in a weight ratio of 0.2:0.6:1, microporous), calcium chloride 22g, sodium polyacrylate 4g, quicklime 4g, polyethylene oxide 0.3g; Second component: citric acid 127.96g.

[0046] Comparative Example 1 A composite powder material for mosquito induction, comprising: Component 1: 100g calcium carbonate (D50 particle size 40~70μm, solid); Second component: citric acid 127.96g.

[0047] Comparative Example 2 A composite powder material for mosquito induction, comprising: The first component: 100g calcium carbonate (D50 particle size 40~70μm, microporous), 4g sodium polyacrylate, 4g quicklime; Second component: citric acid 127.96g.

[0048] Comparative Example 3 A composite powder material for mosquito induction, comprising: The first component: 100g calcium carbonate (D50 particle size 40~70μm, microporous), 22g calcium chloride, 4g quicklime; Second component: citric acid 127.96g.

[0049] Comparative Example 4 A composite powder material for mosquito induction, comprising: Calcium carbonate 100g (D50 particle size 40~70μm, microporous), calcium chloride 22g, sodium polyacrylate 4g, quicklime 4g, citric acid 127.96g.

[0050] The above raw materials are completely mixed during preparation and are not separated into two components.

[0051] Comparative Example 5 100% calcium carbonate.

[0052] Comparative Example 6 A composite powder material for mosquito induction, comprising: The first component: 100g calcium carbonate (D50 particle size 40~70μm, microporous), 22g calcium chloride, 4g sodium polyacrylate, 4g quicklime; Second component: citric acid 127.96g.

[0053] In Examples 7 to 11, the calcium carbonate with a microporous structure in Comparative Examples 2 to 6 is obtained by the following method: (1) first adding calcium hydroxide slurry to a carbonization reactor, then adding polyethylene glycol to the calcium hydroxide slurry, passing carbon dioxide gas for carbonization, and adding hydrogen peroxide during the carbonization process; when the pH of the slurry is carbonized to 8.5 to 9.5, stopping adding hydrogen peroxide to the slurry, and continuing to pass carbon dioxide gas for carbonization until the pH is 6.5 to 7.5, the amount of hydrogen peroxide added is 0.2 to 5% of the dry weight of the calcium hydroxide; (2) The calcium carbonate slurry is filtered and washed to form a filter cake, and then the filter cake is dispersed into a slurry by adding water, and then 1.0-2.0% of the dry weight of calcium carbonate as a dispersant sodium polyacrylate is added, and then the slurry is spray-dried to obtain a porous calcium carbonate dry powder. The BET of the prepared porous calcium carbonate is 15-60 m 2 / g, and the average pore size is 5~16 nm.

[0054] When compounding, first use multi-stage screening to obtain calcium carbonate with a D50 particle size of 200-300 μm, calcium carbonate with a D50 particle size of 40-70 μm, and calcium carbonate with a D50 particle size of 10-30 μm, and then mix them according to the dosage.

[0055] It should be noted that, in addition to the above-mentioned method for preparing porous calcium carbonate, other methods for obtaining porous calcium carbonate may also be applicable.

[0056] The composite powder material samples in Examples 1 to 11 and Comparative Examples 1 to 6 were tested according to the following test method: Test environment: indoor; temperature: 25℃; humidity: 35RH%.

[0057] Take 1000g of the mixed composite powder material sample, and then put it into conical flasks of the same specifications, and use a carbon dioxide concentration detector to measure the initial carbon dioxide concentration at 5cm above the center of the conical flask mouth. Then add 1mL of clean water to the surface of the composite powder material sample (except for Control Example 6, that is, Control Example 6 is tested directly after mixing), and measure the carbon dioxide concentration at 5cm above the center of the conical flask mouth after 5min and 1h. The test results are shown in Table 1, where the units of the specific readings are not counted and are uniformly set to 0.

[0058]

[0059] From the data in the table, it can be seen that the composite powder material in this embodiment can stably generate carbon dioxide, which can be used for mosquito luring. At the same time, combined with the data in Examples 1 to 10 and Comparative Examples 1 to 6, it can be seen that after the introduction of calcium chloride and super absorbent resin powder, a local liquefaction environment can be formed to accelerate the reaction process of carbonate or bicarbonate with solid acid; the use of super absorbent resin powder alone is not conducive to accelerating the reaction of carbonate or bicarbonate with solid acid, and the carbon dioxide release is insufficient, and the use of calcium chloride alone will cause the local liquefaction environment to expand too fast, and the reaction rate of carbonate or bicarbonate with solid acid will rise sharply. The composite powder material releases all carbon dioxide in advance, and the service life drops sharply. The comprehensive use of calcium chloride and super absorbent resin powder can regulate the process of carbonate or bicarbonate and solid acid to generate carbon dioxide. Furthermore, when calcium carbonate is used as the main source of carbon dioxide, calcium carbonate with a microporous structure has more advantages.

Claims

1. A composite powder material for mosquito induction, characterized in that: comprising a first component and a second component; In parts by weight, the raw materials of the first component include: carbonate or bicarbonate, 100 parts; Calcium chloride, 10-30 parts; Super absorbent resin powder, 1-10 parts; Quicklime, 1-5 parts; The raw materials of the second component include solid acid; Wherein, the molar ratio of hydrogen ions in the solid acid to carbonate ions in the carbonate is 2-2.3:1; The molar ratio of hydrogen ions in the solid acid to bicarbonate in the bicarbonate is 1-1.2:

1.

2. The composite powder material for mosquito induction according to claim 1, characterized in that: The carbonate is one or more of calcium carbonate, sodium carbonate, magnesium carbonate, potassium carbonate, and ammonium carbonate; The bicarbonate is one or more of calcium bicarbonate, sodium bicarbonate, magnesium bicarbonate, potassium bicarbonate, and ammonium bicarbonate.

3. The composite powder material for mosquito induction according to claim 2, characterized in that: The carbonate is calcium carbonate having a microscopic porous structure.

4. The composite powder material for mosquito induction according to claim 2 or 3, characterized in that: When the carbonate is calcium carbonate, it includes calcium carbonate with a D50 particle size of 200-300 μm, calcium carbonate with a D50 particle size of 40-70 μm, and calcium carbonate with a D50 particle size of 10-30 μm.

5. The composite powder material for mosquito induction according to claim 4, characterized in that: When the carbonate is calcium carbonate, the weight ratio of calcium carbonate with a D50 particle size of 200-300 μm, calcium carbonate with a D50 particle size of 40-70 μm, and calcium carbonate with a D50 particle size of 10-30 μm is 0.1-0.3:0.5-0.7:

1.

6. The composite powder material for mosquito induction according to any one of claims 1 to 5, characterized in that: The highly water-absorbent resin powder is one or more of polyacrylic acid salt, polyacrylamide, starch-acrylate polymer, starch-acrylonitrile graft copolymer, and acrylamide-acrylonitrile-acrylic acid terpolymer.

7. The composite powder material for mosquito induction according to any one of claims 1 to 5, characterized in that: The raw materials of the first component also include: 0.1-0.5 parts of water-soluble polymer.

8. The composite powder material for mosquito induction according to claim 7, characterized in that: The water-soluble polymer is one or more of polyvinyl alcohol and polyethylene oxide.

9. The composite powder material for mosquito induction according to any one of claims 1 to 5 and 8, characterized in that: The solid acid is one or more of lactic acid, citric acid, malic acid, aminosulfonic acid and boric acid.

10. A method for using the composite powder material for mosquito induction according to any one of claims 1 to 9, characterized in that: Mix the first component and the second component which are stored separately and sealed before use, and then spray a proper amount of water on the surface of the mixture, or place the mixture in an environment with a humidity greater than or equal to 50RH% and let it stand for 1 to 10 minutes.

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